I have plugged my mic into a Shure USB audio interface, connected to my MacBook Pro, to record voiceover in Audition. When I've done this in the past, I've been able to record directly to a waveform file or in the multitrack editor (by arming a track to record). I haven't recorded anything in a couple months and when I tried to do so yesterday (and again today) I can't seem to record on either "side" of Audition. On the waveform side, the record button is clickable but nothing happens. On the multitrack side, the "arm for recording" button is greyed out. I have checked the settings and confirmed that the input is coming from the Shure USB interface. Is there something else I should be doing?
I tried upgrading from CC2014 to CC2015, but the problems remain. I also have restarted with the audio interface plugged in, and with it unplugged.
Any thoughts on how to solve or troubleshoot this problem are very welcome - thanks for your help!